Title: Numerical simulation and field synergy analysis of heat transfer performance of radial slit fin surface

Authors: Jun-Jie Zhou, Zhi-Gen Wu, Wen-Quan Tao

Addresses: School of Energy and Power Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shananxi, Xi'an 710049, China. ' School of Energy and Power Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shananxi, Xi'an 710049, China. ' School of Energy and Power Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shananxi, Xi'an 710049, China

Abstract: The finite volume method is used to numerically simulate the laminar heat transfer performances of a plate fin-and-tube heat exchanger surface with radially positioned slots and a plain plate fin-and-tube surface. It is found that at the identical pumping power or identical pressure drop, the performance of the slotted fin surface is much better than that of the plain fin surface, while under the identical mass flow rate, the performance of the slotted fin is inferior to that of the plain one, and where there is an enhanced heat transfer, there is a better synergy between velocity and temperature gradient.

Keywords: numerical simulation; field synergy principle; plain plate fins; radial slit fins; heat transfer performance; identical pumping power; identical pressure drop; identical mass flow rate; CFD; computational fluid dynamics; finned-tube heat exchangers.

DOI: 10.1504/PCFD.2006.010967

Progress in Computational Fluid Dynamics, An International Journal, 2006 Vol.6 No.7, pp.419 - 427

Published online: 22 Sep 2006 *

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